:root {
  --river-950: #061c2e;
  --river-900: #0a2a44;
  --river-800: #0e3b5c;
  --river-700: #1a507a;
  --river-500: #3a8fb7;
  --river-200: #cde2eb;
  --sand-50: #fdfaf1;
  --sand-100: #fbf6e8;
  --sand-200: #faefd3;
  --sand-300: #f4e4c1;
  --sunrise-500: #e87c3b;
  --sunrise-600: #d26424;
  --carbon-900: #0b0c0e;
  --carbon-700: #232629;
  --carbon-500: #5a5f66;
  --line: #ded8c6;
  --white: #fff;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shadow: 0 18px 55px rgba(6, 28, 46, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--carbon-900);
  background: var(--sand-100);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-underline-offset: 3px; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--sand-100) 92%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 78px; display: flex; align-items: center; gap: 28px; }
.brand-link { display: inline-flex; text-decoration: none; }
.desktop-nav { display: flex; gap: 26px; margin-left: auto; }
.desktop-nav a { font-size: 14px; font-weight: 650; text-decoration: none; }
.desktop-nav a:hover { color: var(--river-700); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--river-800);
  border-radius: 999px;
  background: var(--river-800);
  color: var(--white);
  font-weight: 750;
  text-decoration: none;
  transition: transform 140ms ease, background 140ms ease;
}
.button:hover { background: var(--river-900); transform: translateY(-1px); }
.button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--sunrise-500) 55%, transparent);
  outline-offset: 3px;
}
.button-small { min-height: 42px; padding-inline: 18px; font-size: 14px; }
.button-secondary { background: transparent; color: var(--river-900); border-color: var(--line); }
.button-secondary:hover { background: var(--white); }
.button-light { background: var(--sand-100); border-color: var(--sand-100); color: var(--river-900); }
.button-light:hover { background: var(--white); }
.action-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.hero { padding: 28px 0 70px; }
.hero-grid {
  min-height: 650px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 42px;
  padding: clamp(34px, 5vw, 70px);
  border-radius: 30px;
  overflow: hidden;
  color: var(--sand-100);
  background: linear-gradient(145deg, var(--river-900), var(--river-700));
  box-shadow: var(--shadow);
}
.eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--river-700);
}
.eyebrow-light { color: var(--sand-300); }
.hero .eyebrow { color: var(--sand-300); }
h1, h2, h3 { font-family: var(--font-serif); line-height: 1.04; letter-spacing: -0.025em; }
h1 { margin: 0; font-size: clamp(58px, 8vw, 104px); font-weight: 500; }
h1 em { color: var(--sunrise-500); font-weight: 500; }
h2 { margin: 0; font-size: clamp(40px, 5vw, 62px); font-weight: 500; }
h3 { margin: 0; font-size: 28px; font-weight: 600; }
.hero-lede { max-width: 590px; margin: 24px 0 30px; color: var(--river-200); font-family: var(--font-serif); font-size: clamp(20px, 2vw, 25px); }
.hero-note { margin: 17px 0 0; color: var(--river-200); font-size: 13px; }
.hero .button-secondary { color: var(--sand-100); border-color: rgba(255,255,255,.35); }
.hero .button-secondary:hover { background: rgba(255,255,255,.08); }

.hero-visual { position: relative; min-height: 470px; isolation: isolate; }
.sun-disc { position: absolute; width: min(340px, 78%); aspect-ratio: 1; right: 2%; top: 5%; border-radius: 50%; background: var(--sunrise-500); opacity: .92; }
.board { position: absolute; z-index: 3; width: 74%; height: 25px; top: 47%; left: 7%; border-radius: 80% 40% 60% 50%; background: var(--sand-100); transform: rotate(-4deg); box-shadow: 0 8px 18px rgba(0,0,0,.2); }
.mast { position: absolute; z-index: 2; width: 9px; height: 145px; left: 47%; top: 49%; border-radius: 9px; background: var(--sand-100); transform: rotate(-3deg); transform-origin: top; }
.foil-wing { position: absolute; z-index: 2; width: 58%; height: 20px; left: 22%; top: 78%; border-radius: 60% 45% 60% 45%; background: var(--sand-300); transform: rotate(-2deg); }
.river-line { position: absolute; height: 3px; border-radius: 50%; border-top: 2px solid rgba(205,226,235,.75); }
.river-line-one { left: 2%; right: 8%; bottom: 10%; }
.river-line-two { left: 13%; right: 0; bottom: 5%; }
.river-line-three { left: 28%; right: 18%; bottom: 0; }
.visual-caption { position: absolute; right: 0; bottom: 16%; font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--river-200); writing-mode: vertical-rl; }

.trust-strip { border-bottom: 1px solid var(--line); }
.trust-grid { min-height: 80px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: center; gap: 18px; }
.trust-grid span { text-align: center; font-size: 13px; font-weight: 750; color: var(--river-800); }
.trust-grid span + span { border-left: 1px solid var(--line); }

.section { padding: 100px 0; }
.section-heading { margin-bottom: 42px; max-width: 800px; }
.split-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: end; max-width: none; }
.split-heading > p { margin: 0; color: var(--carbon-700); font-size: 18px; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.lesson-card { display: flex; flex-direction: column; min-height: 440px; padding: 30px; border-radius: 20px; border: 1px solid var(--line); background: var(--white); box-shadow: 0 8px 30px rgba(6,28,46,.05); }
.lesson-card:nth-child(2) { background: var(--sand-200); }
.lesson-card:nth-child(3) { background: var(--river-800); color: var(--sand-100); border-color: var(--river-800); }
.card-eyebrow { margin: 0 0 16px; font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--river-700); }
.lesson-card:nth-child(3) .card-eyebrow { color: var(--sand-300); }
.lesson-card > p:not(.card-eyebrow) { color: var(--carbon-700); }
.lesson-card:nth-child(3) > p:not(.card-eyebrow) { color: var(--river-200); }
.lesson-card ul { list-style: none; padding: 0; margin: 18px 0 26px; display: grid; gap: 8px; }
.lesson-card li::before { content: "—"; margin-right: 9px; color: var(--sunrise-600); }
.text-link { margin-top: auto; font-weight: 800; color: var(--river-800); }
.lesson-card:nth-child(3) .text-link { color: var(--sand-100); }

.section-dark { color: var(--sand-100); background: var(--river-900); }
.section-dark h2, .section-dark h3 { color: var(--sand-100); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { padding-top: 20px; border-top: 1px solid rgba(244,228,193,.28); }
.step > span { display: block; margin-bottom: 28px; font-family: var(--font-mono); color: var(--sunrise-500); }
.step h3 { font-size: 25px; }
.step p { color: var(--river-200); }

.equipment-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.large-copy { color: var(--carbon-700); font-family: var(--font-serif); font-size: clamp(19px, 2vw, 24px); line-height: 1.5; }
.feature-list { display: grid; gap: 14px; }
.feature-list > div { padding: 22px 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.feature-list strong, .feature-list span { display: block; }
.feature-list strong { color: var(--river-800); }
.feature-list span { margin-top: 4px; color: var(--carbon-500); }

.faq-section { background: var(--sand-50); }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.sticky-heading { position: sticky; top: 125px; }
.sticky-heading .button { margin-top: 26px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; position: relative; padding: 25px 45px 25px 0; font-family: var(--font-serif); font-size: 22px; font-weight: 600; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 8px; top: 20px; color: var(--river-700); font-family: var(--font-sans); font-size: 26px; font-weight: 400; }
details[open] summary::after { content: "–"; }
details p { margin: -6px 50px 24px 0; color: var(--carbon-700); }

.cta-section { padding: 30px 0 100px; background: var(--sand-50); }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 52px; border-radius: 24px; color: var(--sand-100); background: var(--river-700); }
.cta-panel h2 { color: var(--sand-100); }
.cta-panel p:not(.eyebrow) { max-width: 650px; margin-bottom: 0; color: var(--river-200); }

.site-footer { padding: 70px 0 25px; color: var(--sand-100); background: var(--river-950); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 42px; }
.footer-grid > div:not(:first-child) { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; }
.footer-heading { margin-bottom: 8px; color: var(--sand-300); font-family: var(--font-mono); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.footer-grid a { color: var(--sand-100); text-decoration: none; font-size: 14px; }
.footer-grid a:hover { color: var(--sunrise-500); }
.footer-copy { max-width: 320px; color: var(--river-200); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 55px; padding-top: 22px; border-top: 1px solid rgba(244,228,193,.16); color: var(--river-200); font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }

.interior-main { min-height: 70vh; padding-bottom: 100px; }
.interior-hero { max-width: 900px; margin-top: 80px; margin-bottom: 55px; }
.interior-hero h1 { color: var(--river-900); font-size: clamp(52px, 7vw, 82px); }
.form-section { display: grid; grid-template-columns: 1.4fr .6fr; gap: 50px; align-items: start; }
.inquiry-form { padding: 32px; border: 1px solid var(--line); border-radius: 22px; background: var(--white); box-shadow: 0 8px 30px rgba(6,28,46,.05); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.inquiry-form label { display: grid; gap: 7px; margin-bottom: 18px; font-size: 13px; font-weight: 800; color: var(--river-900); }
.optional { color: var(--carbon-500); font-weight: 500; }
input, select, textarea { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #c8c5ba; border-radius: 10px; color: var(--carbon-900); background: var(--sand-50); }
textarea { resize: vertical; }
.form-note { margin-top: 0; color: var(--carbon-500); font-size: 13px; }
.contact-aside { padding: 28px; border-radius: 18px; background: var(--sand-200); }
.contact-aside h2 { font-size: 32px; }
.contact-aside h3 { margin-top: 28px; font-family: var(--font-sans); font-size: 16px; letter-spacing: 0; }
.contact-aside ul { padding-left: 20px; }

.policy-intro { max-width: 930px; }
.policy-layout { display: grid; grid-template-columns: 260px 1fr; gap: 70px; align-items: start; }
.policy-nav { position: sticky; top: 120px; display: flex; flex-direction: column; gap: 11px; padding: 22px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.policy-nav a { color: var(--river-800); font-size: 14px; font-weight: 700; }
.policy-content { max-width: 780px; }
.policy-content section { padding: 0 0 42px; margin-bottom: 42px; border-bottom: 1px solid var(--line); scroll-margin-top: 120px; }
.policy-content h2 { margin-bottom: 20px; font-size: 38px; }
.policy-content p { color: var(--carbon-700); }
.redirect-page { min-height: 100vh; display: grid; place-content: center; text-align: center; background: var(--sand-100); }

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .header-inner { justify-content: space-between; }
  .hero-grid { grid-template-columns: 1fr; min-height: auto; }
  .hero-visual { min-height: 370px; }
  .trust-grid { grid-template-columns: 1fr 1fr; padding-block: 15px; }
  .trust-grid span + span { border-left: 0; }
  .split-heading, .equipment-grid, .faq-grid, .form-section, .policy-layout { grid-template-columns: 1fr; gap: 36px; }
  .card-grid { grid-template-columns: 1fr; }
  .lesson-card { min-height: auto; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .sticky-heading, .policy-nav { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .shell { width: min(100% - 28px, 1180px); }
  .site-header .button-small { padding-inline: 14px; font-size: 12px; }
  .site-header img { width: 33px !important; height: 33px !important; }
  .site-header .brand-link span span:last-child { display: none; }
  .hero { padding-top: 14px; }
  .hero-grid { padding: 34px 22px; border-radius: 22px; }
  .hero-visual { min-height: 300px; }
  .visual-caption { display: none; }
  .trust-grid { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .steps-grid, .footer-grid, .form-grid { grid-template-columns: 1fr; }
  .cta-panel { align-items: flex-start; flex-direction: column; padding: 34px 24px; }
  .footer-bottom { flex-direction: column; }
  .inquiry-form { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}
.wordmark { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-serif); font-size: 21px; font-weight: 600; white-space: nowrap; }
.wordmark img { width: 38px; height: 38px; }
.site-footer .wordmark { color: var(--sand-100); }
.site-footer .wordmark img { width: 40px; height: 40px; }
.no-js-note { padding: 10px 14px; color: var(--river-900); background: var(--sand-200); border: 1px solid var(--line); border-radius: 10px; }

/* Booking page */
.booking-main { padding-bottom: 80px; }
.booking-hero { margin-bottom: 35px; }
.booking-section { padding-bottom: 30px; }
.booking-package-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 48px; }
.booking-package { display: grid; gap: 8px; min-height: 170px; padding: 24px; border: 1px solid var(--line); border-radius: 18px; text-align: left; color: var(--carbon-900); background: var(--white); cursor: pointer; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.booking-package:hover { transform: translateY(-2px); border-color: var(--river-400); box-shadow: 0 10px 30px rgba(6,28,46,.08); }
.booking-package.is-active { border: 2px solid var(--river-700); background: var(--sand-100); box-shadow: 0 10px 32px rgba(6,28,46,.1); }
.booking-package > span { color: var(--sunrise-600); font-family: var(--font-serif); font-size: 48px; font-weight: 700; line-height: 1; }
.booking-package strong { color: var(--river-900); font-size: 18px; }
.booking-package small { color: var(--carbon-500); font-size: 13px; }
.scheduler-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.scheduler-heading h2 { margin-bottom: 0; font-size: clamp(34px, 5vw, 52px); }
.calendly-shell { min-height: 700px; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: var(--white); box-shadow: 0 12px 40px rgba(6,28,46,.07); scroll-margin-top: 110px; }
.calendly-shell .calendly-inline-widget { width: 100%; }
.booking-help { margin-top: 20px; color: var(--carbon-700); }

@media (max-width: 760px) {
  .booking-package-grid { grid-template-columns: 1fr; }
  .booking-package { min-height: auto; }
  .scheduler-heading { align-items: flex-start; flex-direction: column; }
  .calendly-shell { border-radius: 14px; }
}